Abstract: The parametric design method of complex product and the product design based on case-based reasoning were introduced to the design of bus air suspension，and the product-level parametric models for bus air suspension were analyzed and built． The case library for bus air suspension was established，and the design interface was developed utilizing UG secondary development tools． The parametric design system of structural parts for bus air suspension was established based on COM and Access 2007 database in Visual C ++ environment． An air suspension was selected as the example to describe the process of parametric design． The given parametric model shows that the system for bus air suspension is feasible and effective．

Key words: air suspension, UG redevelopment, parametric design, database management

摘要： 将产品级参数化设计方法和实例推理技术运用到客车空气悬架设计中,分析了并构建了空气悬架的产品级参 数化模型。在UG 平台上,建立了典型客车空气悬架实例库及其参数化模板,通过UG 二次开发工具设计界面,在 Visual C ++ 环境中结合COM 组件与Access 2007 数据库技术,开发了客车空气悬架的结构件参数化设计系统。通 过实例介绍了参数化设计过程,建立客车空气悬架的参数化模型,结果验证了该参数化设计系统的有效性。

关键词: 空气悬架, UG二次开发, 参数化设计, 数据管理